Inman's Water Technologies - 605-224-5111 - Pierre, SD - Receive a 10% discount on the rental price of a Water Softener and/or Reverse Osmosis Drinking WAter System by paying a year in advance. Receive 10% off of the purchase price of a new Water Softener or Reverse Osmosis Drinking Water System when you mention this ad. Payments made by credit cards do not qualify for discount/special.